That winch question got me a little concerned- just how many bolts would it take for you to feel secure? My winch only came with 4 mounting holes... 4!!! and 4 grade 5 bolts!. Is this enough? I keep imagining that if I acutally needed all of the winches power (10,500 x2 with a snatch block)... would 4 meesely bolts hold?